8.9 oz., 100% USA cotton, 18 singles; Heavyweight waffle knit; Heather Grey is 90% USA cotton/10% polyester; Charcoal Grey is 50% USA cotton/50% polyester; Shoulder-to-shoulder neck tape; 1" double-needle stitched bottom hem; 1" neck ribbing; Ribbed wrist cuffs; Forward-thrusted shoulder seam for comfortable neck fit; Woven neck and side-seam labels